Safety by design - Controlled liquid flow, elimiates vapors, spills and drips for over 1400 listed liquids. 10 year life expectancy. Exceptional ROI. Delivers up to 4 gallons per minute depending on viscosity.93147 (blue) has EPDM components for use with most soaps and caustics. Discharge is 1/2" ID for 1/2" or 5/8" ID tubing. Components meet FDA standards and RoHS requirements.